A 700-page (hardcover) book by Tom Clancy, ex-SEAL John Clark forms a super secret multi-national anti-terrorism group, codenamed " Rainbow". Since Clark is the commander, he is known as "Rainbow Six".

It was then Red Storm Entertainment decided to turn Tom Clancy's story into a video game, and has become a huge success.

Gamer: Dude, wanna play a game of Rainbow Six 3 on XBox?
Reader: Nah, the book's way better.

Quite possibly the best game ever created for Xbox, Rinabow Six 3 is a game that uses real world weapons and swat tactics to take down counter terrorist organizations. Also very enjoyable when played on xbox live in the game type mode "Team Survival".